Correct

唯恐

/ wéi kǒng / 
Strokes

Definition

for fear that/lest/also written 惟恐

Example

As a Verb

fear that...; be afraid of/that...; be fearful of

1
Tā
他
diǎn
踮
zhāo
着
jiǎojiān
脚尖
zǒulù
走路
  
,
wéikǒng
唯恐
bǎ
把
bìngrén
病人
jīngxǐng
惊醒
  
。

He walked on tiptoe for fear of waking the patients.

2
Tāmen
他们
dīshēng
低声
ěryǔ
耳语
  
,
wéikǒng
唯恐
biéren
别人
tīngdào
听到
  
。

They spoke in whispers lest they should be heard.

3
Wǒ
我
wéikǒng
唯恐
tā
她
huì
会
shēngqì
生气
  
。

I was afraid that she might be angry.

4
Wéikǒng
唯恐
yǒushī
有失

fear that there may be some mishap

5
Wéikǒng
唯恐
luòhòu
落后

for fear that one should/might lag behind; for fear of being left behind